When is your half birthday?
Enter a birthday:
When is your half birthday? A "Half Birthday" is not necessarily a birthday plus 6 months. It gets messy because of leap years and the fact that months don't all have the same number of days in them. This calculator does the hard stuff for you. Just enter a birthday and we'll do the messy calculations. We'll also tell you how long ago the birthday was and how long you have to plan a half birthday celebration. Have fun!
The above assumes that it's
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